1 files changed, 15 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-mut-borrow-linear-errors.rs b/src/test/ui/borrowck/borrowck-mut-borrow-linear-errors.rs
new file mode 100644
index 000000000..e3d76398b
--- /dev/null
+++ b/src/test/ui/borrowck/borrowck-mut-borrow-linear-errors.rs
@@ -0,0 +1,15 @@
+// Test to ensure we only report an error for the first issued loan that
+// conflicts with a new loan, as opposed to every issued loan.  This keeps us
+// down to O(n) errors (for n problem lines), instead of O(n^2) errors.
+
+fn main() {
+    let mut x = 1;
+    let mut addr = vec![];
+    loop {
+        match 1 {
+            1 => { addr.push(&mut x); } //~ ERROR [E0499]
+            2 => { addr.push(&mut x); } //~ ERROR [E0499]
+            _ => { addr.push(&mut x); } //~ ERROR [E0499]
+        }
+    }
+}